peters



ROBERT MCNIE, OF NEV YORK, N. Y.

LITHOGRAPHIC PRESS.

Specification of Letters Patent No. 31,818, dated March 26, 1861.

To all whom it may concern:

Be it known that I, ROBERT MCNIE, of No. 541 Hudson street, in the city,county, and State of New York, have invented a new and ImprovedLithographie Press; and I do hereby declare that the following is afull, clear, and exact description of the same, reference being had tothe annexed drawings, making a part of this specification, in which-Figure l, is a side elevation of my invention. Fig. 2, a transversevertical section of the same, taken in the line' a', Fig. 1. Fig. 8, atransverse vertical section of the same, taken in the line y, y, Fig. 1.Fig. 4, a plan or top view of the same. Fig. 5, a longitudinal sectionof the same, taken in the line e, e, Fig. 4. Figs. 6, 7, 8, and 9, areviews of cams employed on the machine. Fig. l0, a detached View of aratchet and arm or tappet which pertains to the invention.

Similar letters of reference indicate corresponding parts in the severalfigures.

To enable those skilled in the art to fully understand and construct myinvention, I will proceed to describe it.

A, represents a framing which may be constructed in any proper way tosupport the working parts of the machine, and B, is al reciprocating bedwhich is placed on the upper part of the framing A, and rests onfriction rollers o, a. To the under side of the bed B, at each sidethere is secured a rack C, into which pinions o, o, on a shaft D, gear.One of the rollers a, on which the bed B, rests is placed loosely onshaft D, and

at one end ofsaid shaft a wheel E, is secured, said wheel having aninternal gear c, into which a pinion d, gears.

F, is a shaft which has three pulleys e, g, placed loosely on it, thecentral one f, being an idle pulley and the other two working ones. Thepulleys e, g, are operated by the same belt, and the pulley e, has thepinion cl, attached to it, while the pulley g, has a pinion CZ,attached, the latter pinion d gearing into a wheel d, on shaft D.

Gr, is a belt shipper which may be constructed in the usual way. Thisbelt ship per is placed inthe upper part of the fram` ing and the upperend of a lever H, is connected to it, the lower end of lever H, beingsecured to a shaft I, which is placed longitudinally in t-he lower partof the framing A, and has an upright rod or lever J, 'seholes i, nearits periphery, said holes being at equal distances apart, and one ormore of them provided with pins j," the use of which will be presentlyshown.

L, is a pawl which engages with the ratchet K, and is attached -to alever M, which is secured to a rock-shaft N, at the lower part of theframing. To each end of the rock-shaft N, there is secured an uprightarm O, the Lipper ends ofiwhich are slotted longitudinally to receivethe arms 7c, 7c, of a carriage P, which is allowed to travel freely backand forth on the framing and has two ink rollers Q, Q, fitted on it.

R, is a shaft which is placed transversely in the framing A, at one endand has a crank-pulley S,.placed on it to which pulley a rod T, isattached. The rod T, near its front end has a semi-circular bearing Z,which at certain times catches over a pin mv, projecting from the leverM, see Fig. l.

U, is a shaft which is placed transversely at the end of the framingnear where the ratchet K, is placed. The shaft U, has an arm V, securedtoit, and from the end of said arm a pin n, projects at right angles,the pin being under the rod T.

To one end of shaft U, there is-attached an arm or lever lV, which isconnected by a link 0, with a lever X, the fulcruni j?, of which is atthe lower part of the framing. The end of lever X, opposite to the endwhere the link 0, is attached has an upright g, attached to it, theupper end of which bears against a flanch 1, on the face of a cani wheelY, which has an internal gear s, into which a pinion Z, on the shaft D,meshes, see Fig. 3. On the face of the wheel Y, there are secured twoprojections t, one of which t, is in contact with the flanch 1", theother one t', being some distance from the flanch.

A', is a cam wheel which is placed 0n a shaft B, the same shaft that thecam wheel Y, is secured to, The cam wheel A', has two ribs or strips u,a, secured to its periphery circumferentially. The. ribs or strips u, u,are of equal length and do not quite extend around the wheel A. Spacesare allowed between their ends, one space fu, being open and the otherone being closed by a flap w, the latter being shown in Fig. 4, thespace o, being shown by dotted lines in Fig. 2.

On the upper part of the framing A, there is placed transversely a boxor casing C', in which a-scraper D', is placed, and allowed to rise andfall freely therein. In the upper part of the box or casing there is ashafta', which has a toggle D", placed loosely on it, the lower end ofwhich bears on the scraper D', as is shown clearly in Fig. 2. The toggleD", has an arm Z2', attached to it, the lower end of which is connectedby a link c', to a lever E', which is secured to a shaft CZ', at oneside of the framing. The lower end of the lever E', is provided with aswinging pin c', shown clearly in Figs. l, 2, and 3. This pin is overthe face or periphery of the camwheel Y. On the shaft d', there is alsosecured a pendent arm F', to the lower end ofwhich a horizontal bar G',is connected, said bar G', being provided with a shoulder j", whichcatches against a pin` g', attached to the lever H, see Fig. 2.

H', is a rod which is secured at one end to a lever I', placed looselyon the shaft U. The opposite end of this rod extends underneath thehorizontal bar G', and the lever I', extends upward about as high as thelever J.

J', is a sliding box which is placed at the front side of the box orcasing C'. The box J', contains a moistened sponge and said box isallowed to rise and fall freely by the working of a bent lever K', whichis connected at its outer end by a link it', with the' upper part of anarm L", the lower end of said arm being fitted loosely on a shaft i',attached to the framing. The a'rm L", has a pin j', projecting from itand this pin bears aga'inst the face of the cam wheel A'.

M', is a tympan which is constructed of leather or other suitableflexible material. This tympan is secured at both ends to the bed B, andit passes through a slot in the scraper D', and around suitable rollers7:', on the framing. The arrangement of the tympan is shown clearly inFig. 5.

To the outer end of the bed B, a horizon-` tal arm Z', is attached,saidarm having a beveled plate m', at its end as shown clearly in Fig.t.

The operation of the press is as follows. The shaft R, is rotatedcontinually, and at the commencement of the operation the stone shown inred outline, having upon its face the design from which the impressionsare taken, is placed on the bed B, the latter being moved back to itsfullest extent in the direction indicated by arrow l. As the bed B,reaches the extent of the movement indicated by the arrow l, and thestone is properly inked the bed B, in consequence of the pinions Z9, Z2,gearing into the racks C, C, will be moved underneath the scraper D', inthe direction indicated by arrow 2, (the belt being on pulley 6,) andthe impression will be given the sheet which was placed on the stoneprior to the movement of the bed B, in the direction indicated by arrow2. As the bed B, approaches the end of this latter movement, the scraperD', is thrown up from the stone by springs ax, ax, in consequence of thelower end of the lever E', being acted upon by the projection t', andthe toggle D", operated so as to allow the scraper to rise under theaction of the springs ctx. At this time the box J', containing themoistened sponge is depressed in consequence of the pin j', of the armL", being opposite the flap fw, between the ends of the ribs or stripsu, u', the pin j', being forced at the outer sides of the strips u, u'.At this time also the belt shipper G, throws the belt on the pulley g,and the movement of the bed B, is reversed, the bed moving in thedirection indicated by arrow l, and the stone is wiped and moistened bythe sponge in box J', the printed sheet being taken off the stone by thetympan M', as the stone and bed move in the direction of arrow l. As thebed B, approaches the termination of its movement in the direction ofarrow l, the box J', is elevated in consequence of the pin j', of thearm L", being opposite the space o, a spring o', drawing the pin j',through the space o, to the inner sides of the strips u, u', and thescraper D', is depressed in consequence of the projection t, of thewheel Y, striking the pin c' of lever E'. The plate m', also actuatesthe lever J, and the lever H, throws the belt shipper which moves thebelt from pulley g, to the idle pulley f, and the bed B, thereforeremains stationary. At this instant the upper end of the upright g,falls in a notch Q', in the flanch 7 of the wheel Y, and the pin n, ofthe arm Y, which supported the rod T, and kept the bearing Z, above thepin m, of lever M, is allowed to descend and lit on the pin m, and thelever M, will consequently' be vibrated back and forth, the arms O, O,giving a reciprocating movement to the carriage P, the rollers Q, Q, ofwhich ink the stone. At every vibration of the carriage P, the pawl L',turns the ratchet K, the distance of one tooth, and when a pin j,strikes the small arm Zz, of shaft I, the shaft I, is turned and thebelt shipper G, throws the belt from the idle pulley f, to the workingpulley e, and the arm V, and rod T, are again elevated, the bearing Z,of rod T, being elevated above the pin m, of lever M, in consequence ofthe wheel Y again turning and the edge of tlanch 1, passing down theupright g. This movement of the arm V, stops the inking device andthebed B, again moves in the direction indicated by arrow 2, a fresh sheetbeing laid on the tympan. The operation of printing is then repeated aspreviously described.

The ink rollers Q, Q, may be made to pass over the stone as many timesas desired by having more or less pins in the ratchet K.

The bar Gr', may up from the pin g, of the lever H, so as to prevent thebelt shipper G, being actuated by lever E', by actuating the lever I.

I would remark that in lieu of the cam wheels A', Y, straight bars A, B,as shown in Figs. 8, and 9, may be used, said bars having areciprocating movement and provided respectively with projections t",15X, and strips ux, ux, corresponding with those on the cam wheels. Iwould also remark that the projections and strips above named as well asthose on the cam wheels may be adjusted so as to regulate the movementof the scraper D', and boX J', according to the length of the stone. Iwould further remark that the tympan M, may be tightened at any time byadjusting one of the rollers le, the same being placed in adjustablebearings. k, see Fig. 5. I would also remark till at any time be thrownthat a water fountain with a wololen cloth or Siphon may be employed tokeep a constant supply of moisture in the sponge. A wiping roller mayalso be attached to the sponge box and driven by a pulley on one endcoming in contact with the belt when on pulley g.

Having thus described my invention, what I claim as new and desire tosecure by Letters Patent; is,

l. The arrangement of the ratchet K, pawl L, lever M, reciprocating rodvT, ink carriage P, arm V, levers W, X, upright g, andthe notched flanchr, or its equivalent for the purpose of forming an automatic inkingdevice as and for the purpose set forth.

2. The pendent arm F', attached to shaft d', bar G', provided withshoulder f, and attached to arm F, in connection with the lever I-I, andbelt shipper Gr, all being ar- Vranged as shown for automaticallyshipping the belt as set forth.

ROBT. MGNIE. j Witnesses:

WM. TUscH, J. W. GooMs. n

